File:Ludwig Zehnder-(1854-1949).jpg
Ludwig_Zehnder-(1854-1949).jpg (276 × 340 pixels, file size: 9 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:49, 16 April 2017 | 276 × 340 (9 KB) | Wiki LIC | {{Information |Description=Ludwig_Zehnder (1854-1949) |Source= http://www.ee.nthu.edu.tw/~sdyang/Courses/OptEngII.htm |Date=c. 1930 |Author={{unkwon|author}} |Permission= |other_versions= }} Category:Physicists from Switzerland |
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